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Finding the Fourth Proportional to 430,845.40, 646,268.10 and 430,845.40

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Solution

The fourth proportional to 430,845.40, 646,268.10 and 430,845.40 is: 646,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,845.40 : 646,268.10 = 430,845.40 : x
  2. Step 2: Convert to fraction form
    430,845.40/646,268.10 = 430,845.40/x
  3. Step 3: Cross multiply
    430,845.40x = 646,268.10 × 430,845.40
  4. Step 4: Simplify right side
    430,845.40x = 278,441,638,051.74
  5. Step 5: Solve for x
    x = 278,441,638,051.74/430,845.40
  6. Step 6: Final answer
    x = 646,268.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.